package com.bwie.filter;

import io.jsonwebtoken.Jwts;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cloud.gateway.filter.GatewayFilterChain;
import org.springframework.cloud.gateway.filter.GlobalFilter;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.annotation.Order;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.http.HttpStatus;
import org.springframework.http.server.reactive.ServerHttpRequest;
import org.springframework.http.server.reactive.ServerHttpResponse;
import org.springframework.util.StringUtils;
import org.springframework.web.server.ServerWebExchange;
import reactor.core.publisher.Mono;

import java.util.concurrent.TimeUnit;

/**
 * @Author: Trump
 * @Date: 2025/7/12 11:43
 * @Description:
 **/
@Configuration
@Order(1)
public class MyFilter implements GlobalFilter {
    @Autowired
    StringRedisTemplate redisTemplate;
    @Override
    public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {

        ServerHttpRequest request = exchange.getRequest();
        ServerHttpResponse response = exchange.getResponse();
        String path = request.getURI().getPath();
        if(path.contains("login")||path.contains("togetPicture")||path.contains("togetPhoneCode")||path.contains("togetHotelByid")||path.contains("selecthotel")){
            System.out.println("白名单放行");
            return chain.filter(exchange);
        }
        String token = request.getHeaders().getFirst("token");
        if(StringUtils.isEmpty(token)){
            System.out.println("token未携带");
            response.setStatusCode(HttpStatus.UNAUTHORIZED);
            return response.setComplete();
        }
        Integer userId = Jwts.parser().setSigningKey("bwie").parseClaimsJws(token).getBody().get("userId", Integer.class);
        String redisToken = redisTemplate.opsForValue().get("token" + userId);
        if(!token.equals(redisToken)){
            System.out.println("token不正确");
            response.setStatusCode(HttpStatus.UNAUTHORIZED);
            return response.setComplete();
        }

        redisTemplate.expire("token"+userId,15, TimeUnit.MINUTES );
        return chain.filter(exchange);
    }
}
